PHP using class properties inside class

Question

I'm a bit confused by PHP. In the example below the only accepted way is to initialise bVar in the constructor. Do i always have to do this if i want to use class properties inside the class itself? Or is my syntax just bad for the purpose if accessing class properties within the class itself?

class test{
protected aVar = "varValue";
protected bVar;
function __construct(){
    $this->bVar = "varValue";
}

function testerFunc(){
    echo $aVar //undefined variable
    echo $this->$aVar //undefined variable
    echo $bvar //works fine
}


}

I can't imagine that echo $bvar works. If you want to access this variable you have to call it like this: $this->bVar — Fabian Schmick
– Fabian Schmick, Commented Feb 22, 2019 at 7:20
You have a typo where you're trying to echo $aVar. It should be echo $this->aVar; Remove the dollar sign before the variable name. — Fabian
– Fabian, Commented Feb 22, 2019 at 7:21
Variables in PHP are represented by a dollar sign followed by the name of the variable! — RainDev
– RainDev, Commented Feb 22, 2019 at 7:24
As RainDev says, you also need a dollar sign when you declare the variable in the first place: protected $aVar = "varValue"; — Fabian
– Fabian, Commented Feb 22, 2019 at 7:25

Rarst · Accepted Answer · 2019-02-22 07:24:13Z

1

Your syntax is bit of a mess:

class test {
    protected $aVar = "varValue";
    protected $bVar;

    function __construct() {
        $this->bVar = "varValue";
    }

    function testerFunc() {
        echo $aVar; //undefined variable
        echo $this->aVar; // varValue (works fine)
        echo $this->bVar; // varValue (works fine)
        echo $bvar; //undefined variable
    }
}

answered Feb 22, 2019 at 7:24

Rarst

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